Chemical Engineers jobs

3.2. Senior Chemical Process Engineer-Separation

About Phoenix Tailings

Phoenix Tailings is a rapidly growing clean mining and metals production startup dedicated to sustainable and economic critical metals production. Our mission is to be the world's first fully clean mining and metals production company, producing the resources needed for the next generation of our economy.

Why Phoenix Tailings

At Phoenix, we believe that nothing great is ever accomplished alone or without the passion of people who push and motivate one another. If you are someone who shares our relentless pursuit of a better future, passion for innovation, and are excited about working with some of the top innovators in the world, then this is the place for you.

Our Values

You are only crazy if you are wrong, it’s ok to be wrong

Lead with Compassion

Be Resourceful

Listen

Hustle

Who We Are Looking For

Phoenix Tailings is seeking a Senior Chemical Process Engineer who thrives at the intersection of lab work and industrial process development. In this role, you’ll focus on designing, optimizing, and scaling solvent extraction systems to separate and refine rare earth elements — a cornerstone process in our clean production pathway. This is a hands-on, impact-driven role where your contributions will directly accelerate our mission to establish a domestic, sustainable supply of critical materials.

Key Responsibilities:

Execute solvent extraction process development for rare earth element separation, from bench to pilot scale
Design and operate solvent extraction experiments, evaluating efficiency, selectivity, and stability of reagent systems
Assist in scaling up processes through data analysis, process modeling, and mass/energy balance development
Contribute to the design of pilot-scale equipment including mixer-settlers, columns, or centrifugal contactors
Analyze experimental results to recommend design or operating condition changes that improve process performance
Develop and maintain process documentation including SOPs, PFDs, and process data logs
Support technology transfer from R&D to operations, including commissioning, startup, and troubleshooting
Maintain a strong focus on safety, chemical handling, and environmental stewardship in all aspects of process work
Collaborate with a cross-functional team of chemists, metallurgists, and engineers to deliver on project milestones

Qualifications:

M.S. or B.S. in Chemical Engineering, Metallurgical Engineering, or related field with 5+ years of industrial experience
Hands-on experience with solvent extraction for rare earth or critical metal separation
Solid understanding of phase separation dynamics, reagent selection, and extraction circuit design
Demonstrated ability to operate lab and pilot-scale chemical processes safely and effectively
Familiarity with process simulation and modeling tools (e.g., METSIM, Aspen, or similar)
Strong analytical and data interpretation skills with an experimental mindset
Experience working in a fast-paced, startup, or R&D-intensive environment is a plus
Excellent communication and technical documentation skills

We offer a competitive compensation package that is based on expertise. We also offer the following benefits:

This pay range reflects best estimate for the total cash compensation which includes salary + discretionary bonus for this role. Total package may vary based on experience and qualifications.

Pay Range: $120,000- $160,000 total cash compensation plus equity

- Healthcare: 100% Medical, dental, and vision coverage for employee
- Stock Options: Ownership in a fast-growing venture-backed company.
- Time Off: Unlimited PTO.
- Learning: Learning and development opportunities to grow your skills and career.

At Phoenix Tailings, we have an open culture that values learning, and we are looking to grow the team with enthusiastic individuals who share our vision of sustainable mining.

Phoenix Tailings, Inc. is an Equal Opportunity Employer, and we value diversity at all levels. All qualified candidates will receive consideration for employment without regard to race, color, religion, sex (including gender identity, sexual orientation, and pregnancy), national origin, age, disability or genetic information, or any other applicable protected characteristics, and these characteristics will not be a factor for consideration of any work-related decisions (including but not limited to hiring, firing, compensation, and discipline).

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